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, Fri, 17 Aug 2001 11:39:06
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Good point, Tom.
If you listen very carefully, you can hear a little "click" when the throttle closes completely and pushes the closed-throttle mini-switch. (Do this with the engine NOT running.) Twist the throttle open until the plunger comes out of the dashpot ("Flying saucer thingy") and then release it, counting the seconds until you hear the click. For a properly functioning dashpot, the time delay should be around 3 or 4 seconds. If it's almost instantaneous, the dashpot is shot. If it's not quite instantaneous, you can adjust it by screwing it in or out on its mount (it's really obvious when you examine it.)
I got a new one (ordered from the dealership) and the silly little thing cost me nearly eighty bucks! But it does improve resistance to stalling when you take your foot off the gas and depress the clutch.
Something to note, though, is that you may still have a stalling problem under certain conditions. If you're driving along, then take your foot off the gas and coast in gear for a few seconds, the throttle closes all the way, even with the dashpot functioning properly. This often happens in city traffic when a light up ahead changes, and you're slowing down approaching it. If you then push in the clutch, especially below about 1500 RPM, the engine has to "wake up" before the RPMs drop to zero. Under those circumstances, the dashpot does nothing. Vacuum leaks, a dirty air filter, a sticking AIC valve, etc., can all cause the engine to die before it can recover.
X-men: you said you looked for vacuum leaks -- but did you check each vacuum line with a tester? Just making sure the lines are all connected isn't enough. Buy or borrow one of those MityVac handpump testers and try to draw vacuum on each vacuum line attached to the manifold, and see if they all hold vacuum. You might find a few more leaks that way.
Good luck!
- = M = -
'87 900T 167K
posted by 208.63.21...
, Fri, 17 Aug 2001 11:39:06
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